Tommy Bowe is out for Ulster’s clash with leaders Leinster this weekend at the Kingspan stadium.
The province have confirmed the winger experienced a mild knee reaction following the game against Zebre.
Meanwhile, Nick Williams has played his last game for the team as he has been unsuccessful in his bid to rehabilitate his recent shoulder injury and will undergo surgery.
Here's an injury update ahead of Saturday's game v @leinsterrugby > https://t.co/zgmuJQXFVt pic.twitter.com/sNNCDOyRCC
— Ulster Rugby (@UlsterRugby) April 26, 2016
Williams is moving to Cardiff at the end of the season.
Ahead of Saturday’s game in Belfast Ulster lie fourth in the table – two points ahead of fifth placed Scarlets.